Does the user e.g. csuser have correct privileges assigned. the CSUSER should have RESOURCE, CONNECT, CREATE privileges.
Once you deploy the cs and cas application in your weblogic server and restart app server.
The next step is it starts importing/creating the required DB Objects in the defined schema e.g. CSUSER with SID as ORCL.

Were you able to get this resolved? I found that I was also stuck at 73% installation, and it was because I was using the wrong type of Java. I was using JRockit, but that is unsupported. I had to switch to Sun Java.